我构建了一个非常简单的bundle，它具有零依赖关系并且不导入任何包。它唯一的内容是一个CalculatorService接口和相应的实现类，只包含一个简单的add（int a，int b）方法。
我为这个包创建了两个PaxExam测试容器，一个使用Karaf容器，另一个使用OSGI容器。 Karaf容器测试工作正常，但OSGI测试容器没有。
澄清一点......如果我将CalculatorService的注入删除到OSGI测试容器中，并在我的JUnit测试用例中直接实例化CalculatorServiceImpl类，它可以正常工作。因此，我的简单包中的类对OSGI测试容器是可见的。
有些问题：
以下是我尝试将CalculatorService注入PaxExam OSGI测试容器时获得的堆栈跟踪。
org.ops4j.pax.swissbox.tracker.ServiceLookupException: gave up waiting for service info.xyz.common.Calculator
at org.ops4j.pax.swissbox.tracker.ServiceLookup.getService(ServiceLookup.java:199)
at org.ops4j.pax.swissbox.tracker.ServiceLookup.getService(ServiceLookup.java:136)
at org.ops4j.pax.exam.inject.internal.ServiceInjector.injectField(ServiceInjector.java:89)
at org.ops4j.pax.exam.inject.internal.ServiceInjector.injectDeclaredFields(ServiceInjector.java:69)
at org.ops4j.pax.exam.inject.internal.ServiceInjector.injectFields(ServiceInjector.java:61)
at org.ops4j.pax.exam.invoker.junit.internal.ContainerTestRunner.createTest(ContainerTestRunner.java:61)
at org.junit.runners.BlockJUnit4ClassRunner$1.runReflectiveCall(BlockJUnit4ClassRunner.java:266)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.BlockJUnit4ClassRunner.methodBlock(BlockJUnit4ClassRunner.java:263)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.ops4j.pax.exam.invoker.junit.internal.ContainerTestRunner.runChild(ContainerTestRunner.java:68)
at org.ops4j.pax.exam.invoker.junit.internal.ContainerTestRunner.runChild(ContainerTestRunner.java:37)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at org.junit.runner.JUnitCore.run(JUnitCore.java:115)
at org.ops4j.pax.exam.invoker.junit.internal.JUnitProbeInvoker.invokeViaJUnit(JUnitProbeInvoker.java:124)
at org.ops4j.pax.exam.invoker.junit.internal.JUnitProbeInvoker.findAndInvoke(JUnitProbeInvoker.java:97)
at org.ops4j.pax.exam.invoker.junit.internal.JUnitProbeInvoker.call(JUnitProbeInvoker.java:73)
at org.ops4j.pax.exam.nat.internal.NativeTestContainer.call(NativeTestContainer.java:112)
at org.ops4j.pax.exam.spi.reactors.AllConfinedStagedReactor.invoke(AllConfinedStagedReactor.java:84)
at org.ops4j.pax.exam.junit.impl.ProbeRunner$2.evaluate(ProbeRunner.java:267)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.ops4j.pax.exam.junit.impl.ProbeRunner.run(ProbeRunner.java:98)
at org.ops4j.pax.exam.junit.PaxExam.run(PaxExam.java:93)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
包含Calculator服务的简单包的pom.xml如下：
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>info.xyz</groupId>
<artifactId>xyz-businessLogic</artifactId>
<version>0.0.1</version>
<packaging>bundle</packaging>
<dependencies>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
</plugin>
<plugin>
<groupId>org.apache.felix</groupId>
<artifactId>maven-bundle-plugin</artifactId>
<configuration>
<instructions>
<Bundle-SymbolicName>${project.artifactId}</Bundle-SymbolicName>
<Bundle-Version>${project.version}</Bundle-Version>
<Import-Package>
</Import-Package>
<Export-Package>
info.xyz.common,
info.xyz.common.impl
</Export-Package>
</instructions>
</configuration>
</plugin>
</plugins>
</build>
</project>
很明显，我的简单包没有依赖关系，导出包含Calculator和CalculatorImpl文件的包。下面是用于定义这些服务的blueprint.xml文件。
<?xml version="1.0" encoding="UTF-8"?>
<blueprint default-activation="eager" xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:jpa="http://aries.apache.org/xmlns/jpa/v1.0.0" xmlns:tx="http://aries.apache.org/xmlns/transactions/v1.0.0"
xsi:schemaLocation="http://www.osgi.org/xmlns/blueprint/v1.0.0 http://www.osgi.org/xmlns/blueprint/v1.0.0
http://www.w3.org/2001/XMLSchema-instance http://www.w3.org/2001/XMLSchema-instance
http://aries.apache.org/xmlns/jpa/v1.0.0 http://aries.apache.org/xmlns/jpa/v1.0.0
http://aries.apache.org/xmlns/transactions/v1.0.0 http://aries.apache.org/xmlns/transactions/v1.0.0">
<bean id="calculatorService" class="info.xyz.common.impl.CalculatorImpl" />
<service ref="calculatorService" interface="info.xyz.common.Calculator" />
</blueprint>
接下来，我的PaxExam OSGI容器的pom.xml如下：
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>info.xyz</groupId>
<artifactId>xyz-test-osgi</artifactId>
<version>0.0.1</version>
<parent>
<groupId>info.xyz</groupId>
<artifactId>xyz</artifactId>
<version>0.0.1</version>
<relativePath>../xyz</relativePath>
</parent>
<dependencies>
<dependency>
<groupId>org.ops4j.pax.exam</groupId>
<artifactId>pax-exam-container-native</artifactId>
<version>${pax.exam.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.ops4j.pax.exam</groupId>
<artifactId>pax-exam-junit4</artifactId>
<version>${pax.exam.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.ops4j.pax.exam</groupId>
<artifactId>pax-exam-link-mvn</artifactId>
<version>${pax.exam.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.ops4j.pax.url</groupId>
<artifactId>pax-url-aether</artifactId>
<version>${pax.url.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.ops4j.pax.exam</groupId>
<artifactId>pax-exam</artifactId>
<version>${pax.exam.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.ops4j.pax.exam</groupId>
<artifactId>pax-exam-inject</artifactId>
<version>${pax.exam.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.apache.felix</groupId>
<artifactId>org.apache.felix.framework</artifactId>
<version>5.4.0</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-core</artifactId>
<version>${ch.qos.logback.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<version>${ch.qos.logback.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>javax.inject</groupId>
<artifactId>javax.inject</artifactId>
<version>${javax.inject.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
<!-- Testing target -->
<dependency>
<groupId>info.xyz</groupId>
<artifactId>xyz-businessLogic</artifactId>
<version>0.0.1</version>
</dependency>
</dependencies>
<build>
<plugins>
<!-- Needed if you use versionAsInProject() -->
<plugin>
<groupId>org.apache.servicemix.tooling</groupId>
<artifactId>depends-maven-plugin</artifactId>
<version>1.3.1</version>
<executions>
<execution>
<id>generate-depends-file</id>
<goals>
<goal>generate-depends-file</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.3</version>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
最后，OSGI Test类如下：
package info.xyz.test.osgi;
import static org.ops4j.pax.exam.CoreOptions.junitBundles;
import static org.ops4j.pax.exam.CoreOptions.mavenBundle;
import info.xyz.common.Calculator;
import javax.inject.Inject;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.ops4j.pax.exam.Configuration;
import org.ops4j.pax.exam.Option;
import org.ops4j.pax.exam.ProbeBuilder;
import org.ops4j.pax.exam.TestProbeBuilder;
import org.ops4j.pax.exam.junit.PaxExam;
import org.ops4j.pax.exam.spi.reactors.ExamReactorStrategy;
import org.ops4j.pax.exam.spi.reactors.PerMethod;
import org.osgi.framework.Constants;
@RunWith(PaxExam.class)
@ExamReactorStrategy(PerMethod.class)
public class OsgiTestClient
{
@Inject
protected Calculator _calculator;
@ProbeBuilder
public TestProbeBuilder probeConfiguration(TestProbeBuilder probe)
{
System.out.println("TestProbeBuilder gets called");
probe.setHeader(Constants.DYNAMICIMPORT_PACKAGE, "*");
probe.setHeader(Constants.IMPORT_PACKAGE, "info.xyz.common");
probe.setHeader(Constants.IMPORT_PACKAGE, "info.xyz.common.impl");
return probe;
}
@Configuration
public Option[] config()
{
return new Option[] {
junitBundles(),
mavenBundle().groupId("info.xyz").artifactId("xyz-businessLogic").versionAsInProject(),
};
}
@Test
public void testAdd()
{
info.xyz.common.impl.CalculatorImpl calculator = new info.xyz.common.impl.CalculatorImpl();
int result = calculator.add(1, 2);
System.out.println("--- testing: ");
}
}
最后一条评论，如果我注释掉注入CalculatorService的代码，代码运行正常（因为我手动实例化CalculatorImpl类）。所以我的测试容器确实具有Calculator接口和实现的编译时和运行时可见性。但注入此服务无效。
最后提醒一下，当我构建一个PaxExam Karaf测试容器时，计算器服务的注入成功并且测试用例运行良好。运行本文中描述的PaxExam OSGI容器时出错。
答案 0 :(得分：2)
是的，那就是原生容器中没有默认安装蓝图堆栈/库（但它们在Karaf中）。
您需要将此deps添加到测试pom中：
<dependency>
<groupId>org.apache.aries</groupId>
<artifactId>org.apache.aries.util</artifactId>
<version>1.1.0</version>
</dependency>
<dependency>
<groupId>org.apache.aries.proxy</groupId>
<artifactId>org.apache.aries.proxy.api</artifactId>
<version>1.0.1</version>
</dependency>
<dependency>
<groupId>org.apache.aries.proxy</groupId>
<artifactId>org.apache.aries.proxy.impl</artifactId>
<version>1.0.4</version>
</dependency>
<dependency>
<groupId>org.apache.aries.blueprint</groupId>
<artifactId>org.apache.aries.blueprint.api</artifactId>
<version>1.0.1</version>
</dependency>
<dependency>
<groupId>org.apache.aries.blueprint</groupId>
<artifactId>org.apache.aries.blueprint.core</artifactId>
<version>1.4.2</version>
</dependency>
<dependency>
<groupId>org.apache.aries.blueprint</groupId>
<artifactId>org.apache.aries.blueprint.core.compatibility</artifactId>
<version>1.0.0</version>
</dependency>
<dependency>
<groupId>org.apache.aries.blueprint</groupId>
<artifactId>org.apache.aries.blueprint.cm</artifactId>
<version>1.0.5</version>
</dependency>
并在测试中将以下软件包添加到您的配置中：
mavenBundle().groupId("org.apache.aries").artifactId("org.apache.aries.util").versionAsInProject(),
mavenBundle().groupId("org.apache.aries.proxy").artifactId("org.apache.aries.proxy.api").versionAsInProject(),
mavenBundle().groupId("org.apache.aries.proxy").artifactId("org.apache.aries.proxy.impl").versionAsInProject(),
mavenBundle().groupId("org.apache.aries.blueprint").artifactId("org.apache.aries.blueprint.api").versionAsInProject(),
mavenBundle().groupId("org.apache.aries.blueprint").artifactId("org.apache.aries.blueprint.cm").versionAsInProject(),
mavenBundle().groupId("org.apache.aries.blueprint").artifactId("org.apache.aries.blueprint.core").versionAsInProject(),
mavenBundle().groupId("org.apache.aries.blueprint").artifactId("org.apache.aries.blueprint.core.compatibility").versionAsInProject().noStart(),
这应该成功！